FairValue

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Mattijs

Branderhorst

GKNetherlands · Fortuna Sittard

№ 205128Emerging €656k +0.20

Player dossierEredivisie

MattijsBranderhorst

GKGoalkeeperGoalkeeper

Club
Fortuna Sittard
League
Eredivisie
Nationality
Netherlands
Age
32
Height
192 cm
Foot
Right
Valued
28 May 2026

Reading the valuation

The market values Branderhorst at €800k. Model A, which never saw Branderhorst during training, estimates €656k: the market value is 22% above that estimate.

That is a factor of ×1.22. Model A's typical held-out miss is ×1.50 either way, so this gap is within its usual error.

Without league and club, Model B estimates €985k, further from the market. Model B is usually further off (typical miss ×2.07): league and club explain much of how the market prices players.

A gap describes the model's arithmetic for this player's inputs, not what the player is worth.

▲ +0.20A €656k▼ −0.21B €985k
Pitch length is a log value scale fitted to this player's figures. ● observed · ◇ Model A · dashed ◇ Model B · each arc is a residual, log(observed) − log(estimate).
Apps
54
Minutes
4,860
Started
54/54
Min / app
90
Cards
4Y 0R

Club matches, two years to the valuation date

The Valuation Journey

What moves Model A

Asking the prediction API to explain Model A for Branderhorst…

SHAP describes the model's arithmetic for this player's inputs, not what causes market value. Model B can be explained only by the live service; Model A also has a published explanation for the research players.

Model A vs Model B against the observed €800k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €800kModel A €656k

Asking the prediction API…

Held-out estimates come from cross-validation, with this player outside the training data: the honest comparison. Served models were refitted on every player, this one included, so they sit closer to the market. Shaded band: Model A's typical miss (×1.50 either way).

Player traitspercentiles vs 485 goalkeepers

Mattijs Branderhorst's percentiles among goalkeepers: Minutes, two years 76th, Starts 62nd, Minutes, last 365 days 65th, European club minutes 32nd76thMinutes62ndStarts65thRecent32ndEurope

Dashed ring: the goalkeeper median (50th percentile)

Minutes, two years

Total club minutes in the two-year window: how much the player was used.

4,860 this player2,790 goalkeeper median76th percentile

450peer deciles · median line · this player ●9,210

No passing, progression or defensive actions exist in the dataset, so no trait claims to measure them.

Valuation history every Transfermarkt valuation on record

First valuation
€50k
Jan 2012
Peak
€900k
Jun 2018
Model target
€800k
May 2026
Valuations
33
6 club changes
May 2026€800kFortuna SittardValuation the model is trained to reproduce

May 2026: €800k, Fortuna Sittard. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2012-01-01€50kWillem II/RKC U19
2013-06-18€50kWillem II Tilburg
2014-02-10€50kWillem II Tilburg
2014-08-11€50kWillem II Tilburg
2015-02-11€50kWillem II Tilburg
2015-07-01€150kMVV Maastricht
2016-02-05€100kMVV Maastricht
2016-07-15€75kWillem II Tilburg
2017-01-18€75kWillem II Tilburg
2017-06-07€150kWillem II Tilburg
2018-01-17€500kWillem II Tilburg
2018-03-27€750kWillem II Tilburg
2018-06-12€900kWillem II Tilburg
2018-10-04€600kWillem II Tilburg
2018-12-28€600kWillem II Tilburg
2019-07-03€450kNEC Nijmegen
2020-04-08€350kNEC Nijmegen
2020-06-29€425kNEC Nijmegen
2020-10-24€375kNEC Nijmegen
2020-12-31€350kNEC Nijmegen
2021-03-16€325kNEC Nijmegen
2021-10-04€350kNEC Nijmegen
2022-01-05€450kNEC Nijmegen
2022-06-08€700kNEC Nijmegen
2022-11-11€600kNEC Nijmegen
2023-06-23€700kNEC Nijmegen
2023-12-15€600kFC Utrecht
2024-05-31€600kFC Utrecht
2024-10-14€700kFortuna Sittard
2024-12-17€800kFortuna Sittard
2025-05-28€800kFortuna Sittard
2025-12-02€850kFortuna Sittard
2026-05-28€800kFortuna Sittard

Audit context group-level, not about this player

Audit group
UEFA
Population gap, Model A
+0.093 95% CI +0.063 to +0.124
This player, market vs held-out A
+0.199

The group comes from first-listed citizenship and is never a model input. Across the population, non-UEFA players' market values sit about 10% above Model A's held-out estimates, relative to UEFA players in the same leagues. One player's residual says nothing about that pattern (typical miss ×1.50), and none of it is evidence of discrimination: the target may itself be biased. Open the Fairness Audit

In context observed value among comparable players in this build

All players in the Terminal →

Eredivisie425 players · median €1M

Valued above 40% of the 425 Eredivisie players.

€75k€500k€3M€20M€800kSee them in the Explorer →

Goalkeepers, all leagues485 players · median €1M

Valued above 39% of the 485 goalkeepers.

€20k€200k€2M€20M€800kSee them in the Explorer →

Where Branderhorst appears

Watchlists and the comparison tray are kept in this browser only.

Near this valuation closest observed values: same league, then same position

Counts and ranks of observed Transfermarkt values only; model errors are never ranked here. Full player export: Every player in the modelling population (D-011).